Outside group hammers Trump U in seven-figure ad blitz in Florida

A Republican group aiming to destroy Donald TrumpDonald John TrumpRepublicans hold on to Arizona House seat Dems win majority in New York Senate, but won't control it Mulvaney to bankers: Campaign donations will help limit consumer bureau's power MORE's presidential campaign has made an ad buy worth at least $1 million targeting the controversy around Trump University.
American Future Fund (AFF), a politically active nonprofit that has already spent $3 million in Florida attacking the GOP front-runner, on Thursday is airing a new anti-Trump ad in Florida, the site of a winner-take-all primary next week. 
The ad shows a man named Cliff, who says he is a former salesman at the now-defunct Trump University, which is the subject of class-action lawsuits from former students who say they were conned.
Cliff describes his time working at Trump University as filled with "nonstop calls" with complaints and says, "it was a shame to work there. I think of myself as a good, ethical, godly man.
"I think I walked away from the job because I thought it would be easier to sleep at night," he continues.
AFF is a nonprofit organized under section 501(c)(4) of the tax code, which allows it to hide the identities of its donors. 
The group has past funding ties to Republican mega-donors Charles and David Koch, but their powerful donor network reportedly pulled back funding in recent years. 
AFF and several other anti-Trump groups, including former Mitt Romney adviser Katie Packer's Our Principles PAC and the pro-Marco RubioMarco Antonio RubioLobbying world Former Florida congressmen mull bipartisan gubernatorial run: report Winners and losers from Jim Bridenstine’s confirmation as NASA administrator MORE super-PAC Conservative Solutions, are spending aggressively in a last-ditch bid to derail Trump in Tuesday contests in Florida, Ohio and Illinois.
Trump has pushed back aggressively against the Trump University charges, releasing a video this week in which he holds up positive evaluations of the classes he says were written by the former students featured in the attack ads.
Regarding the new advertising blitz, AFF adviser Stuart Roy said, “Having previously heard from some of the everyday people victimized by Trump University, some to the tune of tens of thousands of dollars, we’re now hearing of the personal nightmares of those called upon to peddle Donald Trump’s bait-and-switch scheme.  
"If his own people can’t count on Donald Trump to deliver on his promises, how can the American people?”